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Fritz Kübler GmbH

Monday - Thursday: 7.30 am to 5.00 pm
Friday: 7.30 am to 4.00 pm

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Encoders Incremental


  • Wear-free
  • Space and cost savings
  • Contactless
  • 3.600 ppr incremental
  • Max 30 mm hollow shaft, through
  • Max 1" hollow shaft, through
TTL / RS422

Bearingless encoder for shaft diameter up to 30 mm.

The RLI20 bearingless encoder, consisting of magnetic ring and sensor head, with its installation depth of only 16 mm is ideally suited for narrow installation possibilities. Its contactless measuring principle enables error-free operation even under adverse environmental conditions and a long service life. IP68 / IP69k protection, special encapsulation technology, and tested resistance to cyclic humidity and heat provide maximum reliability even in unprotected outdoor use. This bearingless encoder can be mounted on shafts up to max. 30 mm diameter.

Shaft type 8 mm hollow shaft, through
10 mm hollow shaft, through
12 mm hollow shaft, through
15 mm hollow shaft, through
18 mm hollow shaft, through
20 mm hollow shaft, through
25 mm hollow shaft, through
30 mm hollow shaft, through
3/8 " hollow shaft, through
5/8 " hollow shaft, through
1 " hollow shaft, through
Working temperature -20 °C ... +80 °C
Protection level IP67
Connection types Radial cable
Max. rotational speed 12.000 min-1
Weight 200 g
Scanning magnetic
Resolution max. 3.600 ppr incremental
Supply voltage 4,8...26 V DC
4,8...30 V DC
Interfaces Push-pull
TTL / RS422
Resistant and insensitive
  • High shock and vibration resistance.
  • Sturdy housing with IP67 protection, optionally with special housing for high resistance against condensation (IP68 / IP69k, resistance against cyclic humidity per EN 60068-3-38 as well as humidity and heat per EN 60068-3-78).
  • Contactless and wear-free measuring system for long service life.
Fast commissioning
  • Requires very little installation space.
  • Large mounting tolerance between magnetic ring and sensor head.
  • Easy adjustment by mounting via slotted holes.
  • Function indication by LED.
Data sheet

RLI20 Incremental

PDF ∼ 360,8 KB | 07.2019
Operation Manual

General operating instructions

Multilingual: German, English, French
PDF ∼ 2,2 MB | 03.2020

Installation manual

LI20, LI50, RLI20, RLI50

PDF ∼ 329,5 KB | 12.2016

Safety characteristics


Multilingual: German, English
PDF ∼ 194,1 KB | 06.2019



ZIP ∼ 651,4 KB | 02.2020

CAD / ePlan


ZIP ∼ 794,3 KB | 02.2020

Declaration of conformity

LI20 / RI20 / RLI20 / RLI200 / LI50 / RI50 / RLI50 / RLI500

Multilingual: German, English, French
PDF ∼ 353,6 KB | 05.2017


Safety instructions for magnetic rings

Multilingual: German, English, French, Italian, Spanish
PDF ∼ 566,2 KB | 05.2017


Cables and connectors